Balistoides viridescens

Titan triggerfish – Titán íjhal (75 cm) The titan triggerfish, giant triggerfish or moustache triggerfish is a large species of triggerfish found in lagoons and at reefs in most of the Indo-Pacific, though it is absent from Hawaii. With a length of up to 75 centimeters (30 in), it is the largest species of triggerfish in its range (the stone triggerfish, Pseudobalistes naufragium, from the east Pacific is larger). Feeds on wide variety of invertebrates including corals, mollusks, crustaceans, sea urchins and worms as well as some algae. The titan triggerfish is usually wary of divers and snorkelers, but during the reproduction season the female guards its nest, which is placed in a flat sandy area, vigorously against any intruders. Although bites are not venomous, the strong teeth can inflict serious injury that may require medical attention. The threat posture includes the triggerfish facing the intruder while holding its first dorsal spine erect. It may also roll onto its side, allowing it a better look at the intruder it perceives as threatening its nest. The titan triggerfish will not always bite, but can swim at snorkelers and divers escorting them out of their territory. Range: Red Sea and Gulf of Aden to Fr. Polynesia, north to S Japan, south to Mozambique and New Caledonia.